Clin Assoc Prof Tan Teck Kiang Malcolm

MBBS, MRCP, M.Med (Int Med)

Director

Singapore General Hospital

Specialty: Gastroenterology

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About Doctor

Languages Spoken

Education and Training

Professional Appointments and Committee Memberships

Awards

Publications

Conditions Treated By This Doctor

Acute ＆ Chronic Viral Hepatitis Coeliac Disease Colonoscopy Colorectal Cancer Screening Crohn's Disease Endoscopic Resection of Polyps and Early Cancers Enteroscopy Gastroscopy H. Pylori Infection Inflammatory Bowel Disease Liver Cirrhosis Microscopic colitis Stomach Cancer Screening Ulcerative Colitis

Clinical Interests

Gastroenterology, Hepatology, Inflammatory Bowel Disease

Clinical Appointments

Director

Inflammatory Bowel Disease Centre

Senior Consultant

Gastroenterology ＆ Hepatology

Academic Appointments

Clinical Senior Lecturer, Yong Loo Lin School of Medicine

Core Faculty, Singhealth Gastroenterology Senior Residency Programme

Clinical Assistant Professor, Duke-NUS Graduate Medical School

About Doctor

Dr Malcolm Tan graduated from National University of Singapore, Faculty of Medicine in 2005 with MBBS (Singapore). He attained MRCP (UK) and Master of Medicine (Singapore) in 2010. He completed specialist training in Gastroenterology and Hepatology in 2015 and was awarded a Health Manpower Development Plan (HMDP) programme. From 2015 to 2016, he completed an Inflammatory Bowel Disease (IBD) Fellowship at John Radcliffe Hospital, Oxford University Hospital in Oxford.

He is the current Chairperson on the Joint Committee on Specialist Training (Gastroenterology) Exit Examination Committee of Singapore and Director of the IBD Service in SGH.

Languages Spoken

English

Education and Training

M. Med (Int Med), National University of Singapore, School of Medicine (2010)
MRCP (UK), Royal Colleges of Physicians of the United Kingdom (2010)
MBBS (Singapore), National University of Singapore, School of Medicine (2005)

Professional Appointments and Committee Memberships

Chairperson of Joint Committee on Specialist Training (Gastroenterology) Exit Examination Committee

Awards

SGH Scholarship for MSc Public Health
Singapore General Hospital Service With A Heart Award 2025
Medical ACP Senior Educator Award 2023
Singapore General Hospital Service with a Heart Award 2023
Singhealth Outstanding Faculty Award Academic in Year 2021/2022
Singapore General Hospital Service with a Heart Award 2022
Singhealth Outstanding Faculty Award Academic in Year 2020/2021
Singhealth Outstanding Faculty Award Academic in Year 2017/2018
Awarded Health Manpower Development Plan (HMDP) by Eastern Health Alliance in 2015

Publications

Samuel Jun Ming Lim, Kaina Chen, Yi Yuan Tan, Shu Wen Tay, Thomson Chong Teik Lim, Ennaliza Salazar, Webber Pak-Wo Chan, Malcolm Teck Kiang Tan. Early predictors of rescue therapy and colectomy in acute severe ulcerative colitis. Singapore Med J. 2025 Aug 1;66(8):449-456. doi: 10.4103/singaporemedj.SMJ-2024-242. Epub 2025 Aug 20.
Yi Yuan Tan, Elizabeth Hui Ting Cheong, Chong Teik Lim, Sihui Cai, Shu Wen Tay, Justin Wen Hao Leong, Ennaliza Salazar, Lionel Tim-Ee Cheng, Albert Su Chong Low, Malcolm Teck Kiang Tan. Clinical and environmental impact of intestinal ultrasound for inflammatory bowel disease: a tertiary centre experience in Southeast Asia. Scand J Gastroenterol. 2025 Sep;60(9):889-899. doi: 10.1080/00365521.2025.2533338. Epub 2025 Jul 23.
S Cai, C T Lim Y Y Tan, Y X Tay, E H T Cheong, M T K Tan. Intestinal ultrasound for Crohn's disease: A single-centre experience in cost and carbon emissions reduction through transdisciplinary collaboration. Radiography Sep 2025 doi:10.1016/j.radi.2025.103114
Lydia White, Malcolm Tan, Justin Wen Hao Leong. Inpatient care. Inflammatory Bowel Disease Nursing Manual. 2025; : 563 doi: 10.1007/978-3-031-87503-8_51
Chong-Teik Lim, Shu-Wen Tay, Sakktivel Elangovan, Wan-Chee Ong , Gek-Hsiang Lim , Ennaliza Salazar , Webber P W Chan , Malcolm T K Tan, Long-term effectiveness and persistence rate of ustekinumab dose intensification in a South East Asian inflammatory bowel disease center J Gastroenterol Hepatol. 2024 Apr 28. doi: 10.1111/jgh.16562. Online ahead of print.
Sim B, Cheah MCC, Chan WPW, Wang YT, Tan M, Hang SK, Salazar. Approximately 1 in 10 Ambulatory Inflammatory Bowel Disease Patients Are At Risk Of Malnutrition – A Prospective Singapore Cohort, J Dig Dis Mar 2023 doi: 10.1111/1751-2980.13165
Qui M, Le Bert N, Chan WPW, Tan M, Hang SK, Hariharaputran S, Sim JXY, Low JGH, Ng W, Wan WY, Ang TL, Bertolett A, Salazar E. Favorable vaccine-induced SARS-CoV-2-specific T cell response profile in patients undergoing immune-modifying therapies. J Clin Invest. 2022 Jun 15;132(12:e159500. doi: 10.1172/JCI159500
Tan Yi Yuan, R Rajesh, Malcolm Tan. Oral faecal microbiota transplantation in ulcerative colitis. Lancet Gastroenterol Hepatol 2022 Apr;7(4):286. doi: 10.1016/S2468-1253(21)00469-6
Shu Wen Tay, Kevin Kim Jun The, Tiing-Leong Ang, Malcolm Tan. Ulcerative colitis: STRIDE-ing beyond symptoms with new standards. Singapore Med J 2021 Nov 26. doi: 10.11622/smedj.2021173.
TL Ang, KW Lim, Daphne Ang, YJ Wong, Malcolm Tan, Andrew Wong. Clinical audit of current Helicobacter pylori treatment outcomes in Singapore. Singapore Med J 2021 Sep. doi: 10.11622/smedj.2021105
Malcolm Tan, Valerie Ng, Chong Teik Lim, Wei-Qiang Leow, Webber Chan. Stringent criteria for withdrawal of biologics in ulcerative colitis. Lancet Gastroenterol Hepatol 2021 Sep;6(9):687-688 doi: 10.1016/S2468-1253(21)00181-3
Yu Jun Wong, Guan Sen Kew, Poh Seng Tan, Zhaojin Chen, Martin Putera, Wenjun Alexander Yip, Tiing Leong Ang, Kwong Ming Fock, Guan Huei Lee, John Hsiang, Daniel Q Huang, Andrew Kwek, Mark D Muthiah, Rahul Kumar, Malcolm Tan, Jessica Tan, Prem Harichander Thurairajah, Eng Kiong Teo, Bee Choo Tai, Seng Gee Lim. Novel albumin, bilirubin and platelet criteria for the exclusion of high-risk varices in compensated advanced chronic liver disease: A validation study. Clin Res Hepatol Gastroenterol. 2021 Nov 26;45(6):101598. doi: 10.1016/j.clinre.2020.101598.
Yi Yuan Tan, Gary Sei Kiat Tay, Yu Jun Wong, James Weiquan Li, Andrew Boon Eu Kwek, Tiing Leong Ang, Lai Mun Wang, Malcolm Teck Kiang Tan. Clinical Features and Predictors of Dysplasia in Proximal Sessile Serrated Lesions. Clin Endosc. 2021 Apr 29. doi: 10.5946/ce.2020.198.
Yu Jun Wong, Malcolm Tan, Qishi Zheng, James Weiquan Li, Rahul Kumar, Kwong Ming Fock, Eng Kiong Teo, Tiing Leong Ang. A systematic review and meta-analysis of the COVID-19 associated liver injury Ann Hepatol Aug 31;S1665-2681(20)30161-7. doi: 10.1016/j.aohep.2020.08.064.
Kevin Kim Jun Teh , Shu Wen Tay , Kaina Chen , Samantha Jingyun Koh , Yu Jun Wong , Andrew Boon Eu Kwek , James Weiquan Li , Kwong Ming Fock , Eng Kiong Teo , Tiing Leong Ang , Malcolm Teck Kiang Tan. Impact of Enhanced Personal Protective Equipment on Colonoscopy Performance During the COVID-19 Pandemic. Endosc Int Open. 2020 Jun;8(6):E809-E814. doi: 10.1055/a-1167-1703. Epub 2020 Jun 2.
Stephanie M Slevin, Lucy C Garner, Conor Lahiff, Malcolm Tan, Lai Mun Wang, Helen Ferry, Borgel Greenaway, Kate Lynch, Alessandra Geremia, Stephen Hughes, Karen Leavens, David Krull, Daniel J B Marks, Katherine Nevin, Kevin Page, Naren Srinivasan, Ruth Tarzi, Paul Klenerman , Simon Travis, Carolina V Arancibia-Cárcamo, Satish Keshav. Lymphocyte Activation Gene (LAG)-3 Is Associated With Mucosal Inflammation and Disease Activity in Ulcerative Colitis. J Crohns Colitis. 2020 Mar 16;jjaa054. doi: 10.1093/ecco-jcc/jjaa054.
Tan M, East JE. Fitting Balloon Overtube-Assisted Colonoscopy (BOAC) Into the Difficult or Failed Colonoscopy Algorithm. Clin Gastroenterol Hepatol. 2018 Apr;16(4):594-595. doi: 10.1016/j.cgh.2017.11.035
Tan M, Lahiff C, Bassett P, Bailey AA, East JE. Efficacy of Balloon Overtube-Assisted Colonoscopy In Patients With Incomplete or Previous Difficult Colonoscopies: A Meta-Analysis. Clin Gastroenterol Hepatol. 2017 Oct;15(10):1628-1630
Li JW, Tan MTK, Ang TL, Teo EK. Chemoprevention trials of GI cancers in Asia. Best Practice & Research Clinical Gastroenterology.29(6):967-78. Dec 2015.
Tan M. Importance of defining loss of response before therapeutic drug monitoring. Gut. 2015;64(3):516-7.Mar 2015
Tan M, Ong JP, Teo EK. Achieving deep remission in Crohn's disease: treating beyond symptoms. Annals of the Academy of Medicine, Singapore. Apr 2014;43(4):200-2.